#TypeError: error must be an instance of Error when deploying MDX Next.js App

1 messages · Page 1 of 1 (latest)

modern mason
#

My Next.js app is using MDX to display content. When I run the app in development mode, it works fine. However, when I deploy the app on github pages, I get the error: "TypeError: error must be an instance of Error" inside my next.config.mjs file when the website is building.

My next.config.mjs file looks like this:
"""
import createMDX from '@next/mdx'

/** @type {import('next').NextConfig} */
const nextConfig = {
// Configure `pageExtensions`` to include MDX files
pageExtensions: ['js', 'jsx', 'mdx', 'ts', 'tsx'],
// Optionally, add any other Next.js config below
}

const withMDX = createMDX({
// Add markdown plugins here, as desired
})

// Wrap MDX and Next.js config with each other
export default withMDX(nextConfig)
"""
Do you have any idea what the problem could be?

timid barnBOT
#

Hi @modern mason. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

#

It seems like you're encountering an issue when deploying your Next.js app with MDX to GitHub Pages. This issue might be related to the configuration or the environment differences between your local setup and the deployment environment.

Based on the knowledge sources, here are a few steps you can take to troubleshoot and potentially resolve the issue:

  1. Enable experimental.mdxRs:
    Ensure that you have enabled the experimental.mdxRs feature in your next.config.mjs. This feature is recommended for MDX support in some cases.

    import createMDX from '@next/mdx'

/** @type {import('next').NextConfig} */
const nextConfig = {
  // Configure `pageExtensions` to include MDX files
  pageExtensions: ['js', 'jsx', 'mdx', 'ts', 'tsx'],
  experimental: {
    mdxRs: true,
  },
  // Optionally, add any other Next.js config below
}

const withMDX = createMDX({
  // Add markdown plugins here, as desired
})

// Wrap MDX and Next.js config with each other
export default withMDX(nextConfig)

    Source (https://github.com/vercel/next.js/issues/62179)

  2. Check for Environment-Specific Issues:
    Sometimes, issues can arise due to differences in the environment. Ensure that the Node.js version and other dependencies in your deployment environment match those in your local environment. You can specify the Node.js version in your deployment configuration if needed.

  3. Review GitHub Actions Configuration:
    If you are using GitHub Actions for deployment, ensure that your workflow configuration is correct. There might be issues related to how the build process is set up in the GitHub Actions workflow.

    Example Issue (https://github.com/vercel/next.js/issues/58637)

#
  1. Verify Canary Release:
    If the issue persists, you might want to verify if the problem exists in the latest Next.js canary release. Sometimes, bugs are fixed in newer versions that are not yet in the stable release.

If none of these steps resolve the issue, you might want to provide more details about your deployment setup or check the Next.js documentation for any updates related to MDX configuration.

For further reference, you can check the following documentation:

If you need more specific help, please provide additional details about your deployment setup and any relevant logs or error messages.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@modern mason kapa.ai is still learning and improving, please let us know how it did by reacting below

modern mason
#

@timid barn My next.js app deploys fine if I do not use the MDX module, but it no longer deploys correctly if the MDX module is used in the next.config.js file.

My dependencies look like this:
"""
{
"name": "name",
"version": "0.1.0",
"private": true,
"homepage": "http://githubcaccount.github.io/repo",
"scripts": {
"dev": "next dev",
"build": "next build",
"start": "next start",
"predeploy": "npm run build",
"deploy": "gh-pages -d out",
"lint": "next lint"
},
"dependencies": {
"@emotion/cache": "^11.11.0",
"@emotion/react": "^11.11.4",
"@emotion/server": "^11.11.0",
"@emotion/styled": "^11.11.5",
"@mdx-js/loader": "^3.0.1",
"@mdx-js/react": "^3.0.1",
"@mui/material-nextjs": "^5.15.11",
"@next/mdx": "^14.2.4",
"@types/mdx": "^2.0.13",
"mui-markdown": "^1.1.13",
"next": "14.2.3",
"prop-types": "^15.8.1",
"react": "^18",
"react-dom": "^18",
"react-markdown": "^9.0.1"
},
"devDependencies": {
"@types/node": "^20",
"@types/react": "^18",
"@types/react-dom": "^18",
"eslint": "^8",
"eslint-config-next": "14.2.3",
"gh-pages": "^6.1.1",
"typescript": "^5"
}
}
"""

timid barnBOT
#

Let me check the knowledge base for you. One moment! :books:

#

It looks like your Next.js app deploys fine without the MDX module but encounters issues when the MDX module is used. Here are some steps to help you troubleshoot and resolve the issue:

  1. Ensure Correct MDX Configuration:
    Make sure your next.config.mjs file is correctly configured to use MDX. Here is an example configuration:

    import createMDX from '@next/mdx'

/** @type {import('next').NextConfig} */
const nextConfig = {
  // Configure `pageExtensions` to include MDX files
  pageExtensions: ['js', 'jsx', 'mdx', 'ts', 'tsx'],
  experimental: {
    mdxRs: true,
  },
  // Optionally, add any other Next.js config below
}

const withMDX = createMDX({
  // Add markdown plugins here, as desired
})

// Wrap MDX and Next.js config with each other
export default withMDX(nextConfig)

    Source (https://nextjs.org/docs/app/api-reference/next-config-js/pageExtensions)

  2. Check for Required MDX Components File:
    If you are using the App Router, ensure you have created the mdx-components.tsx file as it is required for MDX to work with the App Router.

    import type { MDXComponents } from 'mdx/types'

export function useMDXComponents(components: MDXComponents): MDXComponents {
  return {
    ...components,
  }
}

    Source (https://nextjs.org/docs/app/building-your-application/configuring/mdx#add-a-mdx-componentstsx-file)

  3. Verify Dependencies:
    Ensure that all necessary dependencies for MDX are installed. Based on your package.json, you have the required dependencies, but double-check that they are correctly installed.

#

  1. Deployment Configuration:
    Since you are deploying to GitHub Pages, ensure that your deployment script is correctly set up. Your package.json scripts look correct, but verify that the build output is correctly generated and deployed.

  2. Check for Environment-Specific Issues:
    Sometimes, issues can arise due to differences in the environment. Ensure that the Node.js version and other dependencies in your deployment environment match those in your local environment.

  3. Review GitHub Actions Configuration:
    If you are using GitHub Actions for deployment, ensure that your workflow configuration is correct. There might be issues related to how the build process is set up in the GitHub Actions workflow.

If the issue persists, you might want to provide more details about your deployment setup or check the Next.js documentation for any updates related to MDX configuration.

For further reference, you can check the following documentation:

If you need more specific help, please provide additional details about your deployment setup and any relevant logs or error messages.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@modern mason kapa.ai is still learning and improving, please let us know how it did by reacting below

modern mason
#

@timid barn If it helps to discern what the issue is. My next.js app fails in the "Build" job in the "Setup Pages" section when deploying the app on github pages

timid barnBOT
#

Let me check the knowledge base for you. One moment! :books:

#

It sounds like the issue might be related to the configuration of your GitHub Actions workflow, specifically in the "Setup Pages" section. Based on the knowledge sources, here are some steps you can take to troubleshoot and resolve the issue:

  1. Review and Adjust GitHub Actions Configuration:
    Ensure that your GitHub Actions workflow is correctly configured. There might be a conflict or misconfiguration in the action.yml file. Here is an example of how you might need to adjust your configuration:

    - name: Setup Pages
  uses: actions/configure-pages@v3
  with:
    # Automatically inject basePath in your Next.js configuration file and disable
    # server side image optimization (<https://nextjs.org/docs/api-reference/next/image#unoptimized>).
    #
    # You may remove this line if you want to manage the configuration yourself.
    static_site_generator: next

    If this step overwrites your existing next.config.ts, you might need to disable it or adjust it accordingly.

    Source (https://github.com/vercel/next.js/issues/58637)

  2. Check Output Path Configuration:
    Ensure that the output path configuration in your next.config.mjs matches the expected paths in your GitHub Actions workflow. There might be a mismatch causing the build to fail.

    - name: Build
  run: npm run build

    Make sure the build output is correctly directed to the expected directory.

  3. Verify MDX Configuration:
    Ensure that your next.config.mjs file is correctly configured to use MDX. Here is an example configuration:

# 
   import createMDX from '@next/mdx'
   
   /** @type {{import('next').NextConfig}} */
   const nextConfig = {{
     // Configure `pageExtensions` to include MDX files
     pageExtensions: ['js', 'jsx', 'mdx', 'ts', 'tsx'],
     experimental: {{
       mdxRs: true,
     }},
     // Optionally, add any other Next.js config below
   }}
   
   const withMDX = createMDX({{
     // Add markdown plugins here, as desired
   }})
   
   // Wrap MDX and Next.js config with each other
   export default withMDX(nextConfig)

Source (https://nextjs.org/docs/app/building-your-application/configuring/mdx)

  1. Check for Environment-Specific Issues:
    Ensure that the Node.js version and other dependencies in your deployment environment match those in your local environment. You can specify the Node.js version in your deployment configuration if needed.

If the issue persists, you might want to provide more details about your deployment setup or check the Next.js documentation for any updates related to MDX configuration.

For further reference, you can check the following documentation:

If you need more specific help, please provide additional details about your deployment setup and any relevant logs or error messages.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@modern mason kapa.ai is still learning and improving, please let us know how it did by reacting below